7289530205521 has 2 divisors, whose sum is σ = 7289530205522. Its totient is φ = 7289530205520.

The previous prime is 7289530205473. The next prime is 7289530205569. The reversal of 7289530205521 is 1255020359827.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (7289530205473) and next prime (7289530205569).

It can be written as a sum of positive squares in only one way, i.e., 7283866890496 + 5663315025 = 2698864^2 + 75255^2 .

It is a cyclic number.

It is not a de Polignac number, because 7289530205521 - 2⁷ = 7289530205393 is a prime.

It is not a weakly prime, because it can be changed into another prime (7289530295521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3644765102760 + 3644765102761.

It is an arithmetic number, because the mean of its divisors is an integer number (3644765102761).

Almost surely, 2^{7289530205521} is an apocalyptic number.

It is an amenable number.

7289530205521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7289530205521 is an equidigital number, since it uses as much as digits as its factorization.

7289530205521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 7289530205521 in words is "seven trillion, two hundred eighty-nine billion, five hundred thirty million, two hundred five thousand, five hundred twenty-one".